IntelliJ IDEA

Language Server Protocol (LSP) solves a real problem: before, each IDE or editor had to implement support for a specific language separately. A language server puts that work in one place and exposes it through a common protocol, providing completion, formatting, documentation, and related features.…

The Islands theme is now the default look across JetBrains IDEs starting with version 2025.3.This update is more than a visual refresh. It’s our commitment to creating a soft, balanced environment designed to support focus and comfort throughout your workflow. We began introducing …

As we approach the release of IntelliJ IDEA 2025.3, we would like to share key information about changes that may impact your plugin development process. This post addresses common questions from the developer community and provides guidance on maintaining compatibility with the latest IntelliJ Plat…

Please note: Starting with v2026.2, JetBrains will sunset Kotlin Notebook as a product and will no longer maintain it. Kotlin Notebook will be unbundled from IntelliJ IDEA and continue as an open-source, community-driven project hosted on GitHub. The value of extensibility The ability to exten…

With the 2023.2 release cycle, IntelliJ-based IDEs now support the Language Server Protocol (LSP). Discover how this may improve the assistance for custom language-specific features and learn how to begin integrating LSP into a plugin for your IDE.